we see happening in most of these cases and one of them is especially in school kids, high school kids that close to the time of the shooting they will be exhibiting odd behavior, enough so people will go, what s going on? can be aggressive, aggressive physically, verbally, could be just simply inappropriate. what we do know is on the day of and the day before this attack two different teachers were concerned enough to bring it to the attention of the principal and then finally to bring in the parents. so we don t know. i m sure we will find out. two videos were recovered from the cell phone of the suspected gunman in which he talked about shooting and killing student. what does that indicate to you? often times, well, it could be a few different things, often times shooters do this
they re looking for people who were doing that. they ll be looking for people where the bombs went off. these are pieces of the bomb and they will be looking for people who were exhibiting odd behavior, dumping their backpacks and duffel bags and leaving the area. so precisely what they were doing and where, we ll hear about that at 5:00 but that s the kind of thing that would have aroused their interest. nbc pete williams. thank you again for all your reporting on this. you bet. president obama and the first lady are heading back to washington after leading the nation in this morning s prayer vigil at boston s cathedral of the holy cross. nbc s peter alexander is at the white house. good to have you join us. they took off and are on its way back here. the president, as you know, has become so familiar with days like this unfortunately. it was barely four months ago that the president had to console the community in newtown, but today was very different. his remarks were almost